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@geiten `taies getint @ffice Letters Patent No. 74,620, dated Febraary 18, 1868.

IMPROVEMENT IN- `lIORSlEifSHOES.

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TQ ALL WI-IOMIT MAY CONCERN:

Be it knownV that IGEORGE'W. SKINNER, of Rockford, in the countyl of Winnebago, and State of Illinois, have invented certain new and useful Improvements in Horse-Shoes; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the, accompanying drawings, making'part of this specification, and to the letters of reference marked thereon, like letters indicating like parts wherever they occur. v

To enable others skilled in the art to construct. and use my invention, I will proceed to describe it.

I make my horse-shoe in the ordinary manner, and of the usual general form, with certain modifications at the toe and-at the heels, so, that adjustable calks can be fastened to it. These calks I make separately and of different forms.

Figure 1 represents a full front View.

Figure 2 represents a sectional view of the toe.

Figures` and 4 represent sectional views of the heels.

Figure 5 represents an under-side view otl the heels.

My invention consists in a novel method of constructing:r and attaching the toe and heel-calks to the shoe, as hereinafter explained. y

I construct the toefcalk A, with its-vertical'portion, in the usual form, and with-a. lateral ange, o, which has a hole through it for the insertion of a screw, b, which screw also enters a suitably-prepared hole in the shoe, for fastening the calk to the shoe, as shown in figs. I and 2. In the upper face of the calli A, I form an oblong `bevelled recess, vfor the reception of aeorresponding spur, a, formed on the under face of the shoe, at itsv front portion, these parts being shown, in section, in fig. 2. y

As both the recess and the spur are to be formed hy suitable dies, it is important they be made bevelled, to

Vprevent their stickingl in the dies, in the process of swnging them. It is also desirable to form them hevelled for the reason that, by making the spur slightly larger than the recess, the parts are capable of being tightened up,vas they become loosened by wear, by simply 'turning the screw b, and which could not be done if the recess and spur were made with vertical instead Aof inclined surfaces or sides. The spur a serves to prevent the ealk from slipping laterally, while, by means of the screw, itis heldv tightly to the shoe, and, at the same time, may be removed and replaced by another, at will, and without removing the shoe from theanimals foot.

'Ihe calks upon the heels I make in one or the other of two forms, and adjust and then fasten them with set-screws c cl. In one, I make thecalk with a dove-tailed tongue, which ts into the end of the heel, asshowri by e, figs. 4 and 5. In the other, I make a small blunt` calk on the heel, and then make the adjustable calk of the proper shape tot it closely. Iv make the heels of the shoe soas to allow these calks, at their base, to sink below the face ofthe shoe, as shown in iigs. 3 and 4. These calks I attach to the shoes, formed for the purpose, with set-screws. i

In this way, I am enabled to make a shoe with adjustable calks, that may be taken off and renewed whenever necessary. i

What I claim as my invention, is-

1. Constrnctingar a horse-shoe with a. bevelled projecting spur, a, at its front, and the toe-calli with a correspondingrecess, to receive the spur a, and then securing,` the toe-ealk in place by means of the same, together with a screw, I), as shown and described.

2. 'Ihe detachable liecl-eaiks, fitted to a recess in the under side of the shoe, and held in place by means of the projection E or E and screw ci', asshown and described.

Witnesses: 1

Jenn M. BUELL, v Tiros. J. Rune.

GEORGE VW. SKINNR. 

